McCloskey, D E <br/><br/>
Decreased folylpolyglutamate synthetase activity as a mechanism of methotrexate resistance in CCRF-CEM human leukemia sublines.  [electronic resource] 

 -  The Journal of biological chemistry  Apr 1991 
 - 6181-7 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>0021-9258 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Drug Resistance<br/>Humans<br/>Leukemia--enzymology<br/>Methotrexate--metabolism<br/>Peptide Synthases--metabolism<br/>Phenotype<br/>Thymidylate Synthase--metabolism<br/>Tumor Cells, Cultured